android應用程序（一） 短信收發

佈局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/input_number"
        android:textColor="#FF0000"
        android:textSize="20sp" />

    <EditText
        android:id="@+id/et_number"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="phone" >
    </EditText>

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/input_text"
        android:textColor="#FF0000"
        android:textSize="20sp" />

    <EditText
        android:id="@+id/et_content"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:minLines="4" >
    </EditText>
    <Button 
        android:id="@+id/button1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/send"/>
</LinearLayout>

string.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string name="app_name">message</string>
    <string name="action_settings">Settings</string>
    <string name="input_number">請輸入手機號</string>
    <string name="input_text">請輸入短信內容</string>
    <string name="error">號碼或內容不能爲空</string>
    <string name="send">發送短信</string>
</resources>

配置權限

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.message"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="10"
        android:targetSdkVersion="12" />
    <uses-permission android:name="android.permission.SEND_SMS"/>
    //添加這一句

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.message.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

MainActivity.java

package com.example.message;

import android.os.Bundle;
import android.app.Activity;
import android.telephony.SmsManager;
import android.text.TextUtils;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {
	private EditText et_number;
	private EditText et_content;
	private Button send;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		et_content = (EditText) findViewById(R.id.et_content);
		et_number = (EditText) findViewById(R.id.et_number);
		send = (Button) findViewById(R.id.button1);
		send.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				sendmessage();
			}

		});
	}

	public void sendmessage() {
		String content = et_content.getText().toString();
		String number = et_number.getText().toString();
		if (TextUtils.isEmpty(number)) {
			Toast.makeText(MainActivity.this, "號碼不能爲空", 4).show();

			return;

		} else {
			SmsManager manager = SmsManager.getDefault();
			manager.sendTextMessage(number, null, content, null, null);
		}

	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

}

需要注意的是

添加

sendTextMessage 添加包的時候，要添加

import android.telephony.SmsManager;

而不是這個包；

import android.telephony.gsm.SmsManager;